Method and apparatus for regulating emission power of pilot channel

Abstract

A method for adjusting pilot channel transmitting power is provided, including: at network side, receiving currently measured pilot channel Receivng Signal Code Power RSCP and Signal to Interference Ratio Ec / Io which are reported by a mobile station; at network side, determining the currently desired pilot channel transmitting power value based on the received RSCP and Ec / Io; adjusting the pilot channel transmitting power based on the determined currently desired pilot channel transmitting power value. A corresponding apparatus is also provided. By the said method or the said apparatus, the pilot channel transmitting power of base station can be accurately determined, so as to control the communication area of mobile station, and ensure the cell communication quality determined by the mobile station in moving range.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and a device for adjusting transmission power of a pilot channel in a wireless communication system. Background technique [0002] Code Division Multiple Access (CDMA) technology is an advanced wireless spread spectrum communication technology used in digital cellular mobile communication in recent years. It can meet the needs of operators for large-capacity, cost-effective and efficient mobile communication. The CDMA network is a cellular mobile phone network, which is composed of many cells. The access network mainly includes a base station (BS, Base Station) and a base station controller (BSC, Base Station Controller). There are transceivers in the base station, which are responsible for the connection with the user terminals in the coverage area; the base station controller is responsible for various control functions such as network resource m...

AI Technical Summary

Problems solved by technology

Due to the complex wireless propagation environment, pilot signals from other cells will interfere with this cell. In the prior art, link budget or system simulation cannot accurately determine the power of the pilot channel of this cell, especially for indoor coverage. The complexity of the indoor propagation model is very high. It is more difficult for the link budget or coverage prediction simulation to accurately control the power of the pilot channel. The pilot power may be set too large or too small, so the coverage of the pilot signal cannot be accurately controlled. It is also impossible to control the communication range of the mobile station in the cell well.

[0006] Since CDMA is a self-interference system, if the pilot power is set too small, the coverage of the cell will be small, and the area where the mobile station can communicate is limited. In addition, the power of other channels may also be set too small accordingly, and the mobile station’s Downlink quality drops, affecting communication quality

If the pilot power is set too high, it will cause interference to adjacent base stations and mobile stations, affect the communication of other users, and also bring additional power loss, wasting system resources

In addition, if the wireless network environment changes, the calculation of link budget or system simulation to re-adjust the power is large and time-consuming

In this way, the wireless network cannot reach the optimal state quickly, and inappropriate power settings will lead to a decrease in system performance

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